Hi there, I added a second listener in my master.cf. For this listener I added the option message_size_limit=20480000 to increase the maximum size for emails sent via this additional listener.
192.168.xxx.xxx:25 inet n - n - - smtpd -o content_filter= -o message_size_limit=20480000 When I now connect to the server it correctly notifies me about the maximum message size. vs100:/home/simon # telnet 192.168.xxx.xxx 25 Trying 192.168.xxx.xxx... Connected to 192.168.xxx.xxx. Escape character is '^]'. 220 mail2.example.com ESMTP Postfix EHLO mail1.example.com 250-mail2.example.com 250-PIPELINING 250-SIZE 20480000 250-VRFY 250-ETRN 250 8BITMIME quit 221 Bye Connection closed by foreign host. Sending a message larger than the default size of 10MB still results in an error message. 552 Error: message too large The message size after BASE64 encoding was approx. 14MB. Can anyone point me into the right direction, what I'm doing wrong? BR, Simon